Cold settles into the Connecticut valley overnight, and Greenfield wakes to a blue hour reading about ten degrees below whatever the hills are holding. Barlow Paving & Excavation is already moving by then, plowing driveways and lots, clearing walkways, spreading sand and salt where packed snow has gone slick. A long driveway out on the Log Plain flats needs a different plan than a short pitched one a block off Main, and both get one. Snow gets stacked where it can melt away from the pavement instead of back across it come thaw. The job is finished when the surface is dark again and the truck lights swing out onto the road.